Flat-knitting frame



July 15, 1930. r e s 1,770,578

I FLAT KNITTING FRAME Filed April 7, 1928 Patented July 15. 1930'UNIJTED STATES PATENT OFFIQE.

max none, or MIA'IARO, srsnv, ASBIGNOR 'ro snvrnar a nonnanfor'cannnxrz,

. GERMANY rnsr-xnrrrme reams 1 Application filed April 7, 1928, Serial110. $6 8,275, and in Germany June 7,.

' My invention relates to flat knitting frames and more especially tothe needles forming part of such machines. In recent times attempts havebeen made 5 to improve the flatknitting frames substantially in such amanner, as to increase their output, make the 100 s finer and render therunning of the mac ine steadier. This is difiicult on account of the useof bearded w needles and of the resser-bar, for the flexible beard andconsequently the length of the needle must not be made below a certainminimum as otherwise it would forfeit the elasticity required for theressing. Moreis over, there is another obstac e to the shortening of theneedle, namely the fact that the laying of the threads and formation ofloops in the old type oi machine must take place below the groove oftheneedle into which so the end of the beard is pressed. Further thedistance from the end of the cove to the point at which the sinking of te loop takes place, must be so great as to prevent the upper oint ornibof the sinker, from being cau 't in the groove of the needle, which iseasi y liable to occur since during the sink ing of the loops by thejack sinkers, each two needles are at firstslightly pressed against eachother by the thread, as is well known.

so lhe present invention ofi'ers the meansfor renderm possiblethesinking and the formation o loops everi when the needle is shortenedto a considerable extent.

. It consists in the application and use of a 35. solid needle with ashort beard and of a covering point cooperating with it in the forma-'tion of the loops. The needle, beingsolid, i. e. non-perforated, can bemade as thin as any ordinary needle. It will further be 40 shown thatthe movements of the needle bars and the covering-point bars are muchshorter than the movements of similar bars in the knitting machines nowin use, thus allowing a reater speed of working.

46 n the drawings afiixed to this specification and forming part thereofa device embodying my invention is illustrated diagrammatically by wayof example.

In t e drawings: to Fig. 1 is a vertical section of the needle togetherand the 01 bar showing one of the improved needles and one of thecovering points cooperating therewith, the needle and covering pointbeing shown in ino erative position.

Fi s. 2-6-i lustrate the several parts of the evice in difierentpositions.

Fig. 2 showing the making of new loops, 1 the bar carrying the coveringpoints being inoperative.

Fi 3 shows how the covering point cov-. so ers t e hook of the needle. YY

Fig.4 shows the going down of the needle bar and covering point bar.

Fig. 5 illustrates the slipping of the old mesh over the loop, and I onFig. 6 illustrates the formation of the new mesh.

Referring to the drawings, n is the needle and p is the covering point.The covering-- point is movable toward the needle to close the hookandreceive and hold the previously formed loop to assist in knockingover. After the thread has been distributed to the needles by means ofthe yarn guide and after 100 s l have been formed by means of the siners e (Fig. 2), the covering point p (Fig. 3) moves towardsthe needleand covers the hook of the same. the hook disappearing in the groove wof the covering point. In order to enable the end of the covering pointto disappear also, the needle n is formed also with a small groove y.Now both the needle and covering oint move downwardly d meshttherebyslips, on to the hook of the covering point, (Fig. 4). 35 Hereafter thecoverin point p moves away from the needle in suc manner that the oldmesh passes the hook 'ofthe needle and a newmesh is'fornied (Fig. 5).Fig. ,6 shows the position ofthe needle 01. and the covering; "9o ointpafter a row of loops has been finishe he needle n has been lowered fromthe po-f sition illustrated in Fig. 5 and the covering point g) has beenraised. The needle and the covering point are now ready to return intothe osition shown in Fig. 1, for starting anot er row of loops. I

In usin a covering, point as shown, the sinking o the loops ta es placenot below the groove 3 of the improved needle, but we close below theend of the hook. The danger of the crushing of the needles by the nib ofthe sinker no longer exists, as during its movement, the sinker cannotcome-in contact with the groove of the needle at all. The oove g, whichin theimproved needle is situated within the range of the nose (1 of thesinker, is not likely to catch on the sinker, as during the laying ofthe thread, the nee- 10 dles are always between'the sinkers. During theknocking. over of the loops, the needle moves, it is true, down to belowthe lead sinkers, durin the renewed pushin forward the heads ofhe'needles have to d their way between the lead sinkers.- The shorteningof the needles ensures that the needlesv become more stable and that theneedle hooks do not break off so easily as in the case of needles havinlon beards. The shortening go of the needles as urther the advantagethat the fineness of the loop can be increased, and that the needlestroke or travel is considerably shortened, so that the machine can be iworked more quickly and its running becomes steadier.

I wish it to be understood that I do no desire to be limited to theexact details of construction shown and described for obviousmodifications will occur to a person skilled in the art. 7

I clainizp 1. In a machine for knittin plain fabric a needle having anon-resilient 00k, a covering point movable toward the needle to closethe hook and receive" and hold the previously formed loop to assist inknocking over, said needle having a groove, and a downward extension onsaid covering point adapted to fit in said groove.

2. In a machine for knitting plainfabric a needle having a non-resilientbook; a covering oint movable, toward the needle to close t e hook andreceive and hold the pre viously formed loop to assist in knocking 5over, said needle having a groove, and a downward extension on saidcovering point adapted to fit in said groove, said downward extensionhaving a groove adapted to receive the hook of said hooked needle.

to In testimony whereofI afiix m signature.

MA LOHS.

